Improvement in reversible latches



W. M. GRIS'CM. Reversible-Latch. N0.168,986. Patentedochmn.

El 27 7' y jl J' N.PETERS. PHOTQ-LITHOGRAPHER, WASHINGTON, D C,

UNITED STATES PATENT OFFICE.

WM. M. GRISCOM, OF READING, PENNSYLVANIA.

IMPROVEMENT IN REVERSIBLE LATCHES.

Speciication forming part of Letters Patent No. 168,'986,`dated October19, 1875; application filed July 27, 1875.

CASE B.

To all 'whom it may concern Be it known that I, WILLIAM M. GRIsCoM, ofReading, Pennsylvania, have invented certain Improvements in ReversibleLatch-Locks, of which the following is a specification The object of myinvention is to constructa cheap and simple reversible latch-lock; andthisobject I attain in the manner which I will now proceed to describe,reference being hadis the latch-spindle, provided at the outer end` withthc usual inclined head b, and, at its inner end with a groove, d,adapted to a slotted projection, e, on a plate, f, connected bya pin,f', to a lever, F. Owing to this mode of connectin g the latch-spindleto the plate f the for- A mer can be turned round When drawn out, asshown in Fig. 2. The lever F is recessed at w for the reception ofthehub G of the knobspindle, which isl provided with two arms, gg', foracting ou the said lever when the latch has to be moved inward. At theupper end of the lever F is a short arm, h, and a slot, o, for thereception of a pn,'z', on a plate, H, this pin t' forming the fulcrum ofthe said lever. The plate H admits of being slid to and t'ro to alimited extent, and is acted upon by a spring, j, one end of which bearsagainst a projection,

m, on the plate, and the other againsta stud,

n, in the lock-casing, the. tendencyr of the spring being to maintainthe said plate H in the position shown in Fig. 1. The projection m hasan opening, which, when the plate H is in the position shown in Fig. 1,coincides with openings formed in the opposite sides of the lock-casingfor lthe reception of the screw a, which aids in securing the lock tothe door.`

When the plate is in the position shownin Fig. l the head b of thelatch-spindle is Within a recess in the end plate of the lock casing,and consequently cannot be turned; but when the plate H is released fromthe control of the screw a it can be moved to the positio'n shown inFig. 2, and the spindle can then be turned to suit either a right orleft handed door.

The lever F is held closely against the hub G ofthe knob-spindle by theaction of a spring, p, on the arm h, the butt of the said spring beingfitted into a slotted projection, r, lon the end ofthe plate H.

I claim as my invention- A reversible latch-lock, in which a slidingspringplate H, carryinga spring, b, and having a tubular projection,lm., arranged as described, in respect to the screw-openings in thelock-case, is combined Witha lever, F, and a swiveled latch-spindle, allsubstantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM M. GRISCOM.

Witnesses:

FR. M. BANKS, HENY RHOADS.

